CN103007706B - Air purifying device suitable for long and narrow underground cavity construction period and application method thereof - Google Patents
Air purifying device suitable for long and narrow underground cavity construction period and application method thereof Download PDFInfo
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- CN103007706B CN103007706B CN201210545422.8A CN201210545422A CN103007706B CN 103007706 B CN103007706 B CN 103007706B CN 201210545422 A CN201210545422 A CN 201210545422A CN 103007706 B CN103007706 B CN 103007706B
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- container
- air
- inlet end
- catalyst
- exhaust end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 63
- 239000003054 catalyst Substances 0.000 claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 22
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009423 ventilation Methods 0.000 claims abstract description 17
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 8
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 18
- 238000001179 sorption measurement Methods 0.000 claims description 18
- 238000004140 cleaning Methods 0.000 claims description 17
- 239000008187 granular material Substances 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 239000002341 toxic gas Substances 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 13
- 241000628997 Flos Species 0.000 claims description 11
- 239000003595 mist Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 4
- 150000008065 acid anhydrides Chemical class 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000003570 air Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 3
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract 1
- -1 trackless transport Substances 0.000 description 5
- 239000011734 sodium Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003426 co-catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241001274216 Naso Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Abstract
The invention discloses an air purifying device suitable for long and narrow underground cavity construction period and an application method thereof. The purifying device comprises a container I for containing a sodium hydroxide solution, a container II for filling a hydrogen peroxide solution, a container III for containing a pulling carbon monoxide catalyst and a container IV for concentrating purified air, wherein an air inlet end positioned on the middle lower part of the container I is connected with a compression fan, an exhaust end positioned on the top of the container I is inserted into the middle lower part of the container II through an exhaust pipe, the exhaust end positioned on the top of the container II is connected with the air inlet end of the container III, the exhaust end of the container III is connected with the air inlet end of the container IV, and the exhaust end of the container IV is switched on a ventilation main pipeline through a connecting pipe. The air purifying device provided by the invention has the advantages that the structure is simple, the air purifying device and a pipeline machine are matched to use, the in-situ purification of the mixed gas is realized, and the purpose of improving the underground space construction period and the air quality is achieved.
Description
Technical field
The present invention relates to a kind of air cleaning unit, especially a kind of air cleaning unit that is applicable to the long and narrow underground space construction phase, and the using method of this air cleaning unit.
Background technology
In the work progress such as the boring in highway, railway tunnel and mine working tunneling process, explosion, dress slag, trackless transport, spray anchor, can produce a large amount of toxic gas (CO, NO
x, SO
2, H
2s, CO
2), flue gas, dust granules.If sluggish in air circulation, it is mechanical because anoxic causes oil inflame insufficient to aggravate, and in the tail gas of discharge, toxic gas content raises, and then causes having reduced machine power, has damaged the healthy of operating personnel, has shortened mechanical service life.
In order to improve construction environment quality, ensure operating personnel healthy, the service life of prolonged mechanical, country has formulated corresponding construction environment standard, clear and definite dust, CO, NO
x, SO
2, H
2s, CO
2, O
2, N
2the limit value of concentration.In work progress, mostly pass through the mode of pipeline and mechanical air supply, carry fresh air to construction face, but toxic gas concentration is reduced to and can in range of receiving, remains more difficult, and along with the prolongation of tunnel or tunnel length, increasing of Work machine quantity, the discharge difficulty of the input of fresh air and foul atmosphere will further strengthen.
In order to remove airborne toxic gas, dust granules in operation area, be necessary to develop a kind of air cleaning unit, itself and Management of Pipeline Mechanical Equipment ventilate and are used in conjunction with, to reach the object of improving underground space construction phase air quality.
Summary of the invention
Task of the present invention is to provide a kind of air cleaning unit that is applicable to the long and narrow underground space construction phase, and the using method of this air cleaning unit.
Its technical solution is:
Be applicable to the air cleaning unit of long and narrow underground space construction phase, comprise container one for holding sodium hydroxide solution, for holding the container two of hydrogen peroxide, for holding the container three of removal of carbon monoxide catalyst and for concentrating the container four purifying air; The inlet end that is positioned at container one middle and lower part connects compression fan, the exhaust end that is positioned at container one top is plugged to the middle and lower part of container two by blast pipe, the exhaust end that is positioned at container two tops is connected with the inlet end of container three, the exhaust end of container three is connected with the inlet end of container four, and the exhaust end of container four accesses ventilation main pipeline by tube connector.
Said vesse one is L-type, its inner bottom part be the position near inlet end high, away from the low ramped shaped in the position of inlet end, be dust accumulation district in the bottom, slope on slope, on the diapire of the container one in corresponding dust accumulation district, offer solids floss hole, on the shell wall at container one top, be provided with liquid injection port, middle and upper part at container one inner chamber is provided with adsorption filtration layer, adsorption filtration layer comprises bottom metal net sheet and top metal net sheet, between bottom, top metal net sheet, is folded with the haydite layer that thickness is more than or equal to 10cm.
The outer bottom of said vesse one disposes wedge shape damping cushion.
Said vesse three is U-shaped, and its inlet end is positioned at the top of a side pipe body of container three, and exhaust end is positioned at the top of opposite side body; Said vesse three, is provided with catalyst at the top of its both sides body and adds entrance, is provided with catalyst floss hole in the bottom of its both sides body.
Said vesse two, is provided with liquid injection port at its top, is provided with liquid discharge outlet in its bottom.
The using method of the above-mentioned air cleaning unit that is applicable to the long and narrow underground space construction phase, comprises the steps:
A is to the interior hydrogen injecting sodium oxide molybdena of container one supersaturated solution, and the liquid level of NaOH supersaturated solution is lower than adsorption filtration layer; Fill hydrogen peroxide to container two; In container three, fill it up with removal of carbon monoxide catalyst;
B uses compression fan will be mingled with dust granules, the mist of toxic gas and flue gas is pressed into container one, sour gas wherein and acid anhydrides react with NaOH, generation is neutral Yan Heshui, dust granules is trapped in container one simultaneously, gas by NaOH supersaturated solution is when through adsorption filtration layer, carbon containing flue gas is wherein adsorbed, the gas not being adsorbed enters container two subsequently, take off nitric oxide wherein by hydrogen peroxide, the carbon monoxide of not taken off enters container three subsequently, in the time of the catalyst gap through in container three, react, generate harmless carbon dioxide, so far dust granules in mist, toxic gas, flue gas and air separation, air is purified, enter container four through the air purifying, and interior concentrated at container four, in the time that ventilation main pipeline has fresh air outside to send into, between container four and ventilation main pipeline, form under the effect of negative pressure, bring purifying air in container four into ventilation main pipeline.
The present invention has following useful technique effect:
The present invention is simple in structure, can ventilate and be used in conjunction with Management of Pipeline Mechanical Equipment, can realize mist and purify on the spot, reaches the object of improving underground space construction phase air quality.
The present invention is specially adapted to the air cleaning problem of highway, railway tunnel and the Mine Tunnel Construction phase of trackless hauling operation.
Brief description of the drawings
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is further described:
Figure is the structural principle schematic diagram that is applicable to a kind of embodiment of air cleaning unit of long and narrow underground space construction phase in the present invention.
1. containers one in figure, the 2. inlet end of container one, 3. wedge shape damping cushion, 4. dust accumulation district, 5. solids floss hole, 6. blast pipe, 7. container two, 8. the catalyst floss hole of container three, 9 containers three, 10. liquid level, 11. container four, 12. adsorption filtration layers, 13. tube connectors, 14. ventilation main pipelines, the liquid injection port of 15. containers one, the catalyst of 16. containers three adds entrance, the liquid discharge outlet of 17. containers two, the liquid injection port of 18 containers two.
Detailed description of the invention
By reference to the accompanying drawings, be applicable to the air cleaning unit of long and narrow underground space construction phase, comprise container 1 for holding sodium hydroxide solution, for holding the container 27 of hydrogen peroxide, for holding the container 38 of removal of carbon monoxide catalyst and for concentrating the container 4 11 purifying air.Preferably, said vesse one is metal container made, and container two is acid-resistant container, and container three is catalyst container, and container four is common vessel.The inlet end 2 that is positioned at container one middle and lower part connects compression fan, the exhaust end that is positioned at container one top is plugged to the middle and lower part of container two by blast pipe 6, the exhaust end that is positioned at container two tops is connected with the inlet end of container three, the exhaust end of container three is connected with the inlet end of container four, and the exhaust end of container four accesses ventilation main pipeline by tube connector 13.
Preferably, said vesse one is L-type, the inner bottom part of container one is high near the position of inlet end, away from the low ramped shaped in the position of inlet end, be dust accumulation district 4 in the bottom, slope on slope, on the diapire of the container one in corresponding dust accumulation district, offer solids floss hole 5, on the shell wall at container one top, be provided with liquid injection port 15, middle and upper part at container one inner chamber is provided with adsorption filtration layer 12, adsorption filtration layer comprises bottom metal net sheet and top metal net sheet, between bottom metal net sheet and top metal net sheet, be folded with the haydite layer that thickness is more than or equal to 10cm.The outer bottom of said vesse one disposes wedge shape damping cushion 3.Said vesse two, is provided with liquid injection port 18 at its top, is provided with liquid discharge outlet 17 in its bottom.Said vesse three is U-shaped, and its inlet end is positioned at the top of a side pipe body of container three, and exhaust end is positioned at the top of opposite side body.Said vesse three, is provided with catalyst at the top of its both sides body and adds entrance 16, is provided with catalyst floss hole 9 in the bottom of its both sides body.
A using method for the above-mentioned air cleaning unit that is applicable to the long and narrow underground space construction phase, comprises the steps:
A is to the interior hydrogen injecting sodium oxide molybdena of container one supersaturated solution, and the liquid level of NaOH supersaturated solution is lower than adsorption filtration layer; Fill hydrogen peroxide to container two; In container three, fill it up with removal of carbon monoxide catalyst.
B uses compression fan will be mingled with dust granules, the mist of toxic gas and flue gas is pressed into container one, sour gas wherein and acid anhydrides react with NaOH, generation is neutral Yan Heshui, dust granules is trapped in container one simultaneously, gas by NaOH supersaturated solution is when through adsorption filtration layer, carbon containing flue gas is wherein adsorbed, the gas not being adsorbed enters container two subsequently, take off nitric oxide wherein by hydrogen peroxide, the carbon monoxide of not taken off enters container three subsequently, in the time of the catalyst gap through in container three, react, generate harmless carbon dioxide, so far dust granules in mist, toxic gas, flue gas and air separation, air is purified, enter container four through the air purifying, and interior concentrated at container four, in the time that ventilation main pipeline has fresh air outside to send into, between container four and ventilation main pipeline, form under the effect of negative pressure, bring purifying air in container four into ventilation main pipeline.
About above-mentioned steps a:
Container one is arranged on wedge shape damping cushion 3, close solids floss hole 5, inject supersaturation sodium hydroxide solution from liquid injection port 15, until liquid level stops injecting while arriving the medium position of adsorption filtration layer 12, then the bottom metal net sheet of adsorption filtration layer 12 is installed, laying depth is no less than the haydite of 10cm, then the top metal net sheet of adsorption filtration layer 12 is installed, and by double layer of metal net sheet fix tightly.The liquid discharge outlet 17 of closing containers two injects H by the liquid injection port 18 of container two in container two
2o
2, and reach liquid level 10 places.The catalyst floss hole 9 of closing containers three, adds entrance 16 by catalyst and pack de-CO catalyst in container three, makes catalyst be loose depos-its state.Check and ensure interconnecting of container one, blast pipe, container two, container three, container four and tube connector.
About above-mentioned steps b:
Be mingled with dust granules, toxic gas (CO, NO
x, SO
2, H
2s, CO
2), the foul atmosphere of flue gas enters after container one, following chemical reaction can occur container one is interior:
2NO
2+2NaOH=NaNO
2+NaNO
3+H
2O；
SO
2+NaOH=NaSO
3+H
2O；
H
2S+NaOH=Na
2S+H
2O；
CO
2+NaOH=Na
2CO
3+H
2O；
H
2S+Na
2CO
3=Na
2S+H
2O+CO
2
From above-mentioned, after NaOH supersaturated solution, sour gas and acid anhydrides react with NaOH, generate and are neutral Yan Heshui, and dust granules is trapped in this container one simultaneously.The bottom, right side that the inner bottom part slope of container one makes dust granules be gathered in container one is dust accumulation district, and adsorption filtration layer adsorbs unburnt carbon and other water-fast flue gases, and the liquid level of NaOH supersaturated solution should be lower than the end face of filter course., can there is following chemical reaction container two is interior in toxic gas CO, the NO not reacting with NaOH and do not enter container two containing the air of dust granules by adsorption filtration layer and blast pipe:
2NO+3H
2O
2=2HNO
3+2H
2O
Mist passes through H
2o
2take off after NO, toxic gas is remaining CO only, makes it by the loose container three of filling de-CO catalyst, and mist reacts in the time of the space through catalyst, generates the CO nontoxic to human body
2.
Through process like this, the dust granules in mist, toxic gas (CO, NO
x, SO
2, H
2s, CO
2), flue gas can be significantly and air separation, temporarily concentrate in container four through the air purifying, container four is connected with force ventilation pipeline, while having fresh air to send in ventilation main pipeline, the negative pressure forming at the top of tube connector, the air of the purification in container four is brought in ventilation main pipeline, be transported to construction operation region together with fresh air, thereby realized the purification on the spot of mist.Should regularly open solids floss hole 5, remove the solids at 4 places of dust accumulation district.
The relevant technologies content of not addressing in aforesaid way is taked or is used for reference prior art and can realize.
It should be noted that, under the instruction of this description, those skilled in the art can also make such or such easy variation pattern, such as equivalent way, or obvious mode of texturing.Above-mentioned variation pattern all should be within protection scope of the present invention.
Claims (4)
1. be applicable to the air cleaning unit of long and narrow underground space construction phase, it is characterized in that comprising container one for holding sodium hydroxide solution, for holding the container two of hydrogen peroxide, for holding the container three of removal of carbon monoxide catalyst and for concentrating the container four purifying air; The inlet end that is positioned at container one middle and lower part connects compression fan, the exhaust end that is positioned at container one top is plugged to the middle and lower part of container two by blast pipe, the exhaust end that is positioned at container two tops is connected with the inlet end of container three, the exhaust end of container three is connected with the inlet end of container four, and the exhaust end of container four accesses ventilation main pipeline by tube connector;
Said vesse one is L-type, its inner bottom part be the position near inlet end high, away from the low ramped shaped in the position of inlet end, be dust accumulation district in the bottom, slope on slope, on the diapire of the container one in corresponding dust accumulation district, offer solids floss hole, on the shell wall at container one top, be provided with liquid injection port, middle and upper part at container one inner chamber is provided with adsorption filtration layer, adsorption filtration layer comprises bottom metal net sheet and top metal net sheet, between bottom, top metal net sheet, is folded with the haydite layer that thickness is more than or equal to 10cm;
The outer bottom of said vesse one disposes wedge shape damping cushion.
2. a kind of air cleaning unit that is applicable to the long and narrow underground space construction phase according to claim 1, is characterized in that: said vesse three is U-shaped, and its inlet end is positioned at the top of a side pipe body of container three, and exhaust end is positioned at the top of opposite side body; Said vesse three, is provided with catalyst at the top of its both sides body and adds entrance, is provided with catalyst floss hole in the bottom of its both sides body.
3. a kind of air cleaning unit that is applicable to the long and narrow underground space construction phase according to claim 1, is characterized in that: said vesse two, be provided with liquid injection port at its top, and be provided with liquid discharge outlet in its bottom.
4. a using method for the air cleaning unit that is applicable to the long and narrow underground space construction phase as claimed in claim 1, comprises the steps:
A is to the interior hydrogen injecting sodium oxide molybdena of container one supersaturated solution, and the liquid level of NaOH supersaturated solution is lower than adsorption filtration layer; Fill hydrogen peroxide to container two; In container three, fill it up with removal of carbon monoxide catalyst;
B uses compression fan will be mingled with dust granules, the mist of toxic gas and flue gas is pressed into container one, sour gas wherein and acid anhydrides react with NaOH, generation is neutral Yan Heshui, dust granules is trapped in container one simultaneously, gas by NaOH supersaturated solution is when through adsorption filtration layer, carbon containing flue gas is wherein adsorbed, the gas not being adsorbed enters container two subsequently, take off nitric oxide wherein by hydrogen peroxide, the carbon monoxide of not taken off enters container three subsequently, in the time of the catalyst gap through in container three, react, generate harmless carbon dioxide, so far dust granules in mist, toxic gas, flue gas and air separation, air is purified, enter container four through the air purifying, and interior concentrated at container four, in the time that ventilation main pipeline has fresh air outside to send into, between container four and ventilation main pipeline, form under the effect of negative pressure, bring purifying air in container four into ventilation main pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545422.8A CN103007706B (en) | 2012-12-17 | 2012-12-17 | Air purifying device suitable for long and narrow underground cavity construction period and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210545422.8A CN103007706B (en) | 2012-12-17 | 2012-12-17 | Air purifying device suitable for long and narrow underground cavity construction period and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103007706A CN103007706A (en) | 2013-04-03 |
| CN103007706B true CN103007706B (en) | 2014-08-20 |
Family
ID=47957145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210545422.8A Expired - Fee Related CN103007706B (en) | 2012-12-17 | 2012-12-17 | Air purifying device suitable for long and narrow underground cavity construction period and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103007706B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412814A (en) * | 2018-02-14 | 2018-08-17 | 重庆恩光科技有限公司 | Tunnel construction ventilation system |
| CN114797397B (en) * | 2021-01-22 | 2023-06-06 | 中国石油化工股份有限公司 | Method for treating hydrogen sulfide gas in underground closed space |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01296000A (en) * | 1988-05-20 | 1989-11-29 | Shimizu Corp | Treatment of tunnel waste gas |
| JP2009240973A (en) * | 2008-03-31 | 2009-10-22 | Nishimatsu Constr Co Ltd | System and method for treating exhaust gas |
| CN102505954A (en) * | 2011-11-03 | 2012-06-20 | 谢飞鸿 | Mobile chemical-degradation ventilator for tunnels |
| CN102505952A (en) * | 2011-11-03 | 2012-06-20 | 谢飞鸿 | Method for clearing harmful gas and dust in long tunnel |
| CN202933615U (en) * | 2012-12-17 | 2013-05-15 | 甘肃省交通科学研究院有限公司 | Air purifying device applicable to construction period of long underground space |
-
2012
- 2012-12-17 CN CN201210545422.8A patent/CN103007706B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01296000A (en) * | 1988-05-20 | 1989-11-29 | Shimizu Corp | Treatment of tunnel waste gas |
| JP2009240973A (en) * | 2008-03-31 | 2009-10-22 | Nishimatsu Constr Co Ltd | System and method for treating exhaust gas |
| CN102505954A (en) * | 2011-11-03 | 2012-06-20 | 谢飞鸿 | Mobile chemical-degradation ventilator for tunnels |
| CN102505952A (en) * | 2011-11-03 | 2012-06-20 | 谢飞鸿 | Method for clearing harmful gas and dust in long tunnel |
| CN202933615U (en) * | 2012-12-17 | 2013-05-15 | 甘肃省交通科学研究院有限公司 | Air purifying device applicable to construction period of long underground space |
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|---|---|
| CN103007706A (en) | 2013-04-03 |
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Owner name: GUO BAOLIN Free format text: FORMER OWNER: CRBC INTERNATIONAL CO., LTD. Effective date: 20140505 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Inventor after: Wang Canghe Inventor after: Guo Baolin Inventor after: Ma Deke Inventor after: Zhang Dewen Inventor after: Ding Xiaojie Inventor after: Tian Hui Inventor after: Zhao Fazhang Inventor before: Wang Canghe Inventor before: Guo Baolin Inventor before: Ma Deke Inventor before: Zhang Dewen Inventor before: Ding Xiaojie Inventor before: Tian Hui |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG CANGHE GUO BAOLIN MA DEKE ZHANG DEWEN DING XIAOJIE TIAN HUI TO: WANG CANGHE GUO BAOLIN MA DEKE ZHANG DEWEN DING XIAOJIE TIAN HUI ZHAO FAZHANG |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140505 Address after: 730050, No. 17, North Street, LAN Gong, Qilihe District, Gansu, Lanzhou Applicant after: Gansu Traffic Science Tesearch Institute Co., Ltd. Applicant after: Guo Baolin Address before: 730050, No. 17, North Street, LAN Gong, Qilihe District, Gansu, Lanzhou Applicant before: Gansu Traffic Science Tesearch Institute Co., Ltd. Applicant before: CRBC International Co., Ltd. |
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